Exercise steps



FIG. 1 is a perspective view of my design for exercise steps.

FIG. 2 is a top view thereof.

FIG. 3 is a left side view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a rear view thereof.

FIG. 6 is a right side view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines are for the purpose of illustrating portions of the exercise steps that form no part of the claim. 

CLAIM The ornamental design for exercise steps, as shown and described. 